Home / 1,036.15-1,551.53-818.35

Finding the Fourth Proportional to 1,036.15, 1,551.53 and 818.35

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Solution

The fourth proportional to 1,036.15, 1,551.53 and 818.35 is: 1,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.15 : 1,551.53 = 818.35 : x
  2. Step 2: Convert to fraction form
    1,036.15/1,551.53 = 818.35/x
  3. Step 3: Cross multiply
    1,036.15x = 1,551.53 × 818.35
  4. Step 4: Simplify right side
    1,036.15x = 1,269,690.48
  5. Step 5: Solve for x
    x = 1,269,690.48/1,036.15
  6. Step 6: Final answer
    x = 1,225.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.